Just need a diagram showing how to install the

If you need step by step instructions to wire something, you shouldn't really attempt to install a security system, as it will tie into almost every important electrical system in the car i.e. starter, door locks, lights, etc.
However, if you know how to get the lower portion of the drivers side dashboard off, and how to cut/splice a wire correctly and aren't color blind, you should be able to follow the installation instructions that came with the system. The wiring diagram for your car is:
What/ Color/ Where:
Constant 12V+ White Ignition Switch Harness
Starter Black/White Ignition Switch Harness
Ignition Black/Yellow Ignition Switch Harness
Accessory Yellow Ignition Switch Harness
Tach Blue Distributor
Brake Switch Green/White Brake Switch
Trunk Pin Green/Black (-) Above Fuse Panel
Parking Lights Red/Black Above Fuse Panel
Head Lamp Red/White Steering Column
Door Trigger Green/Red (-) Driver's Running Board (One of Two Wires)
Door Lock Green/White (-) In Driver's Door at Door Lock Module or at Anti-Theft Module under Driver's Seat
Door Unlock Green/Red (-) Driver's Running Board
Horn Wire Blue/Red (-) Steering Column, use Relay
Windows Up LF=Red/Blue, RF=Blue/Yellow
Windows Down LF=Red/Yellow, RF=Blue/Green